Barrel type cooker



April l, 1952 N. J. PETERS ETAL 2,591,601

BARREL TYPE COOKER Filed Oct. 17,' 1949 4 Sheets-Sheet 1 IN V ENTORS m Para April l, 1952 N. J. PETERS r-:TAL 2,591,601

VBARREL TYPE COOKER Filed Oct. 17, 1949 4 Sheets-Sheet 2 April 1, 1952 N. J. PETERS ETAL 2,591,601

BARREL TYPE CooKER Filed Oct. 17, 1949 4 Sheets-Sheet 3 IN V EN TORS April l, 1952 N. J. PETERS Erm. 2,591,601

BARREL TYPE COOKER Filed oct. 17, 1949 4 sheets-sheet 4 Patented Apr. 1, 1952 BARREL TYPE COOKER Norman J. Peters and Warren Bradley, Fond du Lac, Wis., assignors to Damrow Brothers Company, Fond du Lac, Wis., a corporation of Wisconsin 3 Claims.

'Ihe invention relates to cookers and more particularly to a horizontal barrel type cooker for cooking sample batches of processed cheese or other materials requiring heating by steam, direct or indirect, accompanied by stirring or agitation.

One of the objects of the invention is to provide a cooker having a cylindrical barrel with a feed screw eccentrically mounted in the barrel so as to space portions of the same from the walls of the barrel to allow the material being cooked to work back and forth in the barrel and thus providing more agitation, faster cooking, and better mixing of the constituents of the batch. The eccentricity of the screw may be varied to suit different kinds of materials being cooked.

A further object of the invention is to provide yieldably mounted scraper means associated with the feed screw to prevent the material being cooked from burning on the walls of the barrel, particularly when indirect steam heat is used for heating the barrel.

A further object of the invention is to permit ready removal of the feed screw and scraper assembly by hinging the front plate to the barrel and providing easily disassembled bearings for the feed screw.

A further object of the invention is to providean automatic measuring device at the outlet of the cooker so that a definite amount of the material can be measured when the consistency thereof and a, definite time period is taken into account.

The invention further consists in the several features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings:

Fig. 1 is a side elevation view of 'a cooker embodying the invention;

Fig. 2 is a plan view of the cooker;

Fig. 3 is a front elevation view of the cocker;

Fig. 4 is a vertical sectional View through the cooker taken on the line 4-4 of Fig. 2; parts being broken away;

Fig. 5 is a vertical sectional view taken on the broken line 5-5 of Fig. 4;

Fig. 6 is a front elevation view of the measuring device, parts being broken away and parts being shown in section;

Fig. 7 is a vertical sectional view taken on the line 1-1 of Fig. 6;

Fig. 8 is a view similar to Fig. 6 showing the parts in a discharging position;

Fig. 9 is a vertical sectional View taken on the line 9 9 of Fig. 8;

Fig. 10 is a detailed elevation view of the cover hinge;

Application October 17, 1949, Serial No. 121,772

Fig. l1 is a plan view of the hinge with parts shown in a section taken on the line lI--II of Fig. 10.

Referring to Figs. l to 3, the numeral I2 designates a table or base structure provided with feet I3 and carrying a drive enclosing hood i4 and a barrel support and back end plate i5.

The barrel I6 has a horizontally disposed inner cylindrical wall I1, a similar outer wall IB spaced therefrom to form a jacket space I9, annular end plates 20 and 2| welded to said walls I1 and I8 and a feed hopper extension 23 adjacent its back end normally covered by a cover 24 pivotally carried by a member 25 hinged at 25 and held in closed position by a hingedly .mounted locking bolt 21 Which extends through the forked end 28 of the member 25 and carries a clamping nut 29 engageable with said member.

The support plate I5 has the back end plate of 'the cylinder or barrel secured thereto by bolts 3i! which extend through elongated slots 3| in the plate I5 to permit of eccentric adjustments of the feed screw as hereinafter described. The plate I5 has a cylindrical bearing support 32 disposed thereon carrying abearing 33 in which one end 34 of a feed screw having spiral flights 35 is journalled, the other end 36 of said screw being journalled in a bearing 31 which is eccentrically adjustably clamped by bolts 38 to a front plate 39 which has elongated slots 40 in it for this purpose. The pins 2Ia are alinement pins for the plate 39.

Referring to Figs. 3, 10 and 11, the front plate y 3S is provided with a hinge member 4I having an elongated slot 42 therein through which a hinge pin 43 carried by ears 44 welded to the side of the cylinder passes. In its closed position the plate 39 is tightly clamped to the end plate 2I by a series of clamps including a jaw member 45 having a clamping bolt 43 pivoted or hinged thereto at 41 and extending between portions of a jaw member 48 against which a wing nut 49 on the bolt 46 abuts when said clamp exerts a clamping pressure between the plates 39 and 2i. When the clamps are removed, the plate 39 may then-be moved forwardly to the dotted line position indicated in Fig. 11 due to the slot 42, this movement permitting disengagement of the bearing 31 from the end 3G of the feed screw after which the plate 39 may be swung outwardly about its hinge pin 43 so that full access may be had to the interior of the barrel. From Figs. 4 and 5 it will be noted that the cross sectional area of the feed screwis less than that of the barrel leaving a space 50 above the screw which permits back and forth passage of the material Within the cooker, thus providing good agitation, faster cooking, and better mixing of the ingredients of the batch. The space 50 may be varied by the eccentric adjustment of the feed screw which it will be noted has a relatively fixed center of rotation in the end plate I5, but since the plate 20 is vertically adjustably mounted on said plate I by means of the slots 3l and the bearing 33 is vertically adjustably mounted through slots 4i) on the plate 2|, the relatively eccentric position of the axis of the feed screw in the barrel may be changed.

The jacket space I9 may be heated. by steam through supply and return pipes 5I and 52, or live steam may be introduced directly into the cooker through pipes 53.which are preferably substantially tangentially disposed and inclined toward the front end cf the cylinder to aid in the mixing action.

An electric motor 54 mounted in the base structure I2 is connected by a belt and pulley drive 55 with the input end of a speed reducer 56 mounted in the housing or hood I4, the output end of said reducer being connected to the shaft 3d of the feed screw by a jaw clutch, one

member El of which is slidably keyed to the shaft 3d and urged into driving engagement with the other member y58 of said clutch by a spring 59 interposed between said member 51 and a sealing ring EZI abutting the outer end of the bearing support 32. Thus the shaft 34 may be readily disconnected from the member 51 o its drive clutch and pulled through the bearing 33 and removed from the barrel when the front bearing 3l has been disengaged from the front end 3E of the feed screw by the opening oi the front plate 39 as previously described.

In order to prevent burning of the material adjacent the inner walls of the barrel, especially when the same is heated by introduction of steam into the jacket space I9, a series of diametrically disposed yieldingly mounted Scrapers 6I are provided. Each scraper includes a scraper blade G2 carried by rods 63 slidably mounted in cylindrical guide tubes 6l! secured to the shaft portion 65 of the feed screw, the oppositely disposed pairs of Scrapers being yieldably urged into contact with the walls of the inner cylinder by springs 68 interposed between the oppositely disposed rods 53 as shown in Fig. 5. The ights of the feed screw are provided with diametrically disposed notches 61 to allow free movement of the blades 62 in any position of eccentric adjustment of the feed screw.

The removal of cooked material from the cylinder is controlled either by a pivoted plate of known construction mounted to control passage of said material from the outlet 68 in the front plate 39, or the removal of the cooked material may be controlled by a rotary two-way valve 59 mounted to rotate in a cylinder 'I0 xed to the cover plate I5 and having an elongated discharge opening '1I adapted in one position to register with the outlet 63, as shown in Fig. 7, and in another position to register with a similar opening l2 in the cylinder 19, as shown in Fig. 9. For discharging a batch of material of a predetermined amount a piston 'I3 is slidably mounted in the valve B9, its rod 14 extending through an opening in the end 'I5 of the cylinder le and connected by a pin 'i5 to one end of a link ll which is adjustably connected at its other end by a pin 'I to the intermediate portion of a hand lever 'I9 pivoted at one end 8D to a bracket 8| fixed to the cylinder 10. For

varying the stroke of the piston 'I3 the link Il is provided with spaced holes 82 and the lever 79 with spaced holes 83, so that a pin '18 may be inserted in any one of the holes 82 and 83.

Means are also provided for rotating the valve 69 from charge receiving to charge dispensing position on the movement of the lever 19. For this purpose a bevel gear 85 is keyed to a stud 85 mounted centrally on the closed end B'I of the valve 69 and meshing with a large bevel gear 88 mounted to turn freely on a stud shaft 89 fixed to the cover plate l, said gear carrying a drive pin S9 adapted to be engaged alternatively by reciprocatory means operated .by the lever 19. This means includes a link SI operatively connec-ted at one end by a pin $2 to the lever 'i9 and at its other end by a pin 93 to the outer end of a slide bar i having spaced arms 25 and St at its outer end. rEhe main portion of the bar gli is slidably mounted in a guide el iixed to the cylinder 'EB while the arm S5 is slidably lmounted in a guide 93 fixed to said cylinder. The arm S5 has a slot S53 near its outer end in which an upwardly projecting drive pin lilo is pivotaliy mounted on a pin ii'il, said pin being normally held in upright position against a stop shoulder I by a spring tt and being located to engage the drive pin SB of the gear 8B. The arm 96 has a slot ma near its outer end in which a downwardly projecting drive pin it is pivotally mounted on a pin 113%, said pin being normally held in upright position against a stop shoulder Iii? by a spring iil and being located to engage the drive pin of the gear 88. The pins lilil and IE6 provide one way releasable drive connections between the bar 9@ and the gear 68.

With the above construction as the lever 79 is moved to push the piston i3 inwardly to discharge material, the bar Qi!- is moved toward the left as viewed in Fig` 5 causing the pin iii to engage the pin Si) and turn the gear t3 in a oounterclock- .wise direction and hence the gear 35, with the valve 69 to the position in which the valve 69 alines With the opening l2, the pin |00 moving past the pin 9S after the valve 69 is open and the piston 'E3 moving towards the closed end of the valve to discharge material from the valve chamber until it reaches the end o its stroke, as shown in Fig. 8. During this movement the pin |95 tips back or rocks over the pin Sil as the arm 96 moves to the position shown in Fig. 8. On the reverse movement of the lever 'I9 the piston I3 is retracted or drawn outwardly relative to the valve chamber, and during the first part of this movement or the movement of the bar 94 to the right, the pin H35 engages the pin Si? and shifts the gear 8B from the position shown in Fig. 8 to the position shown in Fig. 6 and then moves past said pin eil to the position shown in said Fig. 6 as the piston 'i3 completes its stroke` Movement of the gear 83 by the pin |05 causes said gear to turn the valve 69 from the position shown in Fig. 9 to the position shown in Fig. 7, and as the piston 'i3 completes its stroke, the pin 1D0 tips back or rocks over the pin 93 and assumes the position shown in Fig. 6 ready to again engage theA pin gli to open the valve 69 for the discharge of the next batch of cooked material. The bar 941 through its link connection with the lever 19 is always given a iixed stroke to shift the valve le to its diiierent positions as noted above, but the adjustable connections between the piston I3 and the lever "le permit the stroke of said piston 13 to be varied.

We desire it to be understood that this invention is not to be limited to any particular form or arrangement of parts except in so far as such limitations are included in the appended claims.

What we claim as our invention is:

1. In a cooker, the combination of a horizontally disposed barrel having end plates, one of said end plates being slidably and pivotally hinged to said barrel and carrying a bearing, a rotatable feed screwljhaving one end mounted in said bearing fro1n`"which it is removable on the sliding movement' of said end plate and the other end Journalledin and slidably removable from the other of said end plates when said rst named end plate is swung outwardly on its hinged pivot away from saidbarrel. j.. 1

2. In a cooker. thelcombination of an end plate having a bearing. a-horizontally Idisposed-'barrel adjustably secured to' said end plate to variably eccentrically disposef'said bearing relative :to said barrel, an end plate vslidably and pivotally hinged ''l to the other end of aid barrel, a bearinga'djustably secured to said? last named end plate to eccentrically disposeY the bearing relative to said barrel to aline this bearing with the first named bearing, a feed screw journalled in said bearings, and means for rotating said feed screw.

3. In a cooker, the' combination of a fixed end plate having a bearing, a horizontallytdisposed barrel adjustably secured along one ofqits axes to said end plate to variably eccentrically dispose said bearing relative to said barrel. an end plate.

named bearing, a feed screw journalled in said bearings, and means for rotating said feed screws.

NORMAN J. lPETERS. WARREN BRADLEY.

REFERENCES CITED The following references are of record in the lile of this patent:

UNITED STATES PATENTS Number Name Date 372,393 Tunstill Nov. 1, 1887 1,116,110 Pfouts Nov. 3, 1914 1,320,976 Black Nov. 4, 19-19 1,928,571 Petit Sept. 26, 1933 2,022,205 Kramer' Nov. 26, 1935 2,080,971 Oltz May 18, 1937 2,140,471 Frolick et al Dec. 13, 1938 2,142,081 Olive Jan. 3, 1939 2,506,101 Oltz May 2, 1950 

